Lantheus details new FTC review window for Curium deal
Lantheus Holdings, Inc. (LNTH) reported an update on regulatory review of its planned acquisition by Curium US Holdings LLC.
Rhea-AI Filing Summary
Lantheus Holdings, Inc. (LNTH) reported an update on regulatory review of its planned acquisition by Curium US Holdings LLC. On September 17, 2026, Curium, as the acquiring party and in consultation with Lantheus, voluntarily withdrew its pre-merger Hart-Scott-Rodino (HSR) Notification and Report Form to give the Federal Trade Commission additional time to review the merger.
Curium resubmitted the HSR filing on September 21, 2026, starting a new 30-day HSR waiting period that runs until October 21, 2026 at 11:59 p.m. Eastern Time, unless terminated earlier or extended, including through any FTC request for additional information. Lantheus states that withdrawal and refiling is a routine antitrust review procedure and that it continues to work constructively with FTC staff.
The company and Curium continue to expect the merger to close in the first half of 2027, subject to required regulatory approvals, adoption of the Merger Agreement by Lantheus stockholders, and satisfaction or waiver of other customary closing conditions. Lantheus has filed a definitive proxy statement regarding the proposed acquisition and directs stockholders to review it and related SEC materials.
Positive
- None.
Negative
- None.
Filing Explained
If completed, the proposed merger would make Lantheus a wholly owned subsidiary of Curium after Curium’s merger subsidiary merges into Lantheus; this notice does not state how existing common shares would be treated.
8-K Event Classification
Key Figures
Key Terms
Hart-Scott-Rodino Antitrust Improvements Act of 1976 regulatory
pre-merger Notification and Report Form regulatory
contingent value rights financial
transitional pass-through payment status regulatory
positron emission tomography medical
radiodiagnostic medical
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did Lantheus Holdings (LNTH) announce about the Curium merger process?
What is the new HSR waiting period for the LNTH–Curium transaction?
Does Lantheus (LNTH) still expect the Curium acquisition to close on its prior timetable?
Why did Curium withdraw and refile the HSR notification for Lantheus (LNTH)?
What approvals and conditions still apply to the Lantheus (LNTH) Curium merger?
Where can Lantheus (LNTH) stockholders find more information about the Curium acquisition?
AI-generated analysis. How Rhea-AI works. Not financial advice.